Nginx Bitrix vhost ssl redirect exclude robots.txt and sitemap.xml

vhost.conf

  set $http 0;
  if ($request_uri = '/robots.txt') {
          set $http 1;
  }

  if ($request_uri = '/sitemap.xml') {
          set $http 1;
  }

  if ($http = 1) {
      rewrite ^ /robots.txt break;
      rewrite ^ /sitemap.xml break;
  }

  if ($http = 0) {
      rewrite ^(.*)$ https://$host$1 permanent;
  }